Mine:
* Low Impact Series
* "Devil Series" (hate that name bc Cathe, I think, looks awesome on the covers) HR, STS TB, & LBB
* XTrain- haven't tried it yet but on preview, it looks amazing!
** Hardcore used to be my ALL TIME FAVORITE from any instructor. I never thought I could replace it, but yeah... it's slipped into 4th; 5th if I could pick just part of STS (Meso 1 is another amazing workout series).